Rent regulation in the United States has undergone a dramatic structural evolution over the past century. What began as temporary wartime anti-inflation price freezes during World War II expanded into municipal rent stabilization regimes in coastal gateways, and has now transformed into 3rd-generation statewide annual caps tied to inflation. Today, rent regulation is no longer an isolated local nuance; it is a critical macroeconomic variable governing real estate cash flows, credit risk, and capital allocation across primary and secondary markets alike. Understanding the legal infrastructure and statutory
mechanics is the baseline prerequisite for underwriting US residential real estate.